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AS5900 CT Detector Interface

26-bit 128-channel low noise current-to-digital converter

Features

  • Flexible configuration to get the optimized operation point in your application
  • Adjustable full scale range, resolution, integration time and power consumption
  • High speed LVDS data interface
  • On board voltage reference and temperature sensor

Benefits

  • Ultra-low noise down to 3200 electrons for a full-scale range up to 1µA
  • Very fast integration time down to 50µs
  • High linearity of ±250ppm of reading ±1ppm of FSR
  • Very low power dissipation down to 1mW/channel
  • Up to 26-bit resolution

Product parameters

Application CT scanner
Primary Function Current-to-digital Converter
Channels 128-channel
Resolution [bit] 26
Input Related Noise [Electrons @ 1µA FSR] 3200
Min. Power Consumption [mW per Channel] 1
Min. Integration Time [µs] 50
Package FBGA248 (10mm x 10mm)

General Description

The AS5900 device is a low noise, 128-channel current-to-digital converter that enables the readout of the photodiodes with highest sensitivity. High-resolution CT imaging can be achieved up to 26-bits resolution. Its 128-low-noise and high linear converter channels provide an increased gray scale, improved contrast and reduce artifacts of 3D CT images. The low power consumption of 1mW per channel reduces self-heating effects and the overall power consumption of the system. An integrated temperature sensor allows the calibration of temperature drifts of the X-ray detector modules.

This product suits for the following applications:

  • Medical, industrial and security CT scanner data acquisition
  • Multi-channel sensors with current output (i.e. photodiode arrays)
  • DAS (data acquisition system) for current input

Tools

Title Category Headline Buy
AS5900EvalBoard Application Board Evaluation Board for AS5900

Technical Documents

Type Description Language
Datasheet Short Datasheet English

Notifications

Type Description Language
Product Change Notification PCN38-2018 (AS5900) English

Other Information

Type Description Language
Block Diagram AS5900 Block Diagram English
Factsheet High resolution CT imaging English

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